A valve
Standard, round, full-size, one-piece valve

A valve - full-size, one-piece valve
  • Higher capacity than standard sieve trays
  • High efficiency
  • Wide operating range
  • Low pressure drop
  • Cost effective


This is the standard, round, full-size, one-piece valve that has been used successfully in columns around the world for over 50 years.
  • It is provided in several leg lengths to accommodate various tray deck thicknesses.
  • It is normally dimpled to help prevent sticking to the deck, but can be flush seated if needed.
  • The orifice can be made to prevent the valve from spinning.
  • Dual valve weights may be used in alternating rows to extend the already wide operating range.


Equivalent BALLAST® designation: V-1.

Additional information